Virtual Synchronous Generator Coordination for Stable Distributed Grids
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Solution Overview
Problem
The integration of multiple static power supplies using virtual synchronous generator control in a power grid can lead to unstable phenomena due to interference among control systems, making stable power supply impossible.
Innovation Solution
A distributed power supply integration management device that manages and coordinates the operation of multiple static power supplies by determining optimal control parameters and operation patterns to avoid interference, ensuring stable grid operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple static power supplies implementing virtual synchronous generator control are connected to operate simultaneously, then the introduction ratio of static power supply increases contributing to decarbonization, but control systems of different distributed power supplies may interfere with each other causing unstable phenomena in the power grid
Solution Approach 1:
A management device is introduced as an intermediary between multiple distributed power supplies and the power grid. This management device coordinates control parameters among multiple virtual synchronous generators, preventing control interference while enabling higher introduction ratios of static power supplies. The intermediary manages the interaction between multiple autonomous control systems without requiring direct complex communication between each power supply unit.
Solution Approach 2:
The system dynamically adjusts control parameters of virtual synchronous generators based on the number of connected distributed power supplies and their operational states. By making control parameters adaptive rather than fixed, the system can accommodate varying numbers of static power supplies while maintaining grid stability, thus resolving the contradiction between introduction ratio and reliability.
2Ease of operation
If individual distributed power supplies determine or change control parameters at their own convenience, then ease of operation is improved, but consistency of the entire grid cannot be maintained causing unstable phenomena
Solution Approach 1:
The management device implements feedback mechanisms where control parameters of virtual synchronous generators are adjusted based on real-time monitoring of grid conditions and the operational states of connected distributed power supplies. This feedback loop ensures that individual power supplies can operate autonomously while the management device maintains overall grid consistency by coordinating parameter changes across all units.
Solution Approach 2:
The management device serves multiple functions: it coordinates control parameters among distributed power supplies, monitors grid stability, adjusts virtual synchronous generator settings, and prevents control interference. This multi-functional approach allows the system to maintain both operational autonomy and grid consistency through a single centralized coordination mechanism.
Data Source
AI summary
A distributed power supply integration management device manages a usage state of a power grid having distributed power supplies connected thereto, output voltages of the distributed power supplies being controlled by a virtual synchronous generator control function that implements operation characteristics of a synchronous generator in a static power supply in a simulative manner. A reception unit receives information about an operation state of each of the distributed power supplies. An operation determination unit determines an operation pattern of the distributed power supplies based on the information obtained by the reception unit. In the determined operation pattern, a control parameter determination unit determines a control parameter value for the virtual synchronous generator control, such that mutual interference of the virtual synchronous generator control in the distributed power supplies can be avoided and the power grid can operate in a stable manner.